The high pixel resolution is emerging as one of the key parameters for the next-generation displays. Despite the development of various quantum dot (QD) patterning techniques, achieving ultrahigh-resolution (>10,000 pixels per inch (PPI)) and high-fidelity QD patterns is still a tough challenge that needs to be addressed urgently. Here, we propose a novel and effective approach of orthogonal electric field-induced template-assisted dielectric electrophoretic deposition to successfully achieve one of the highest pixel resolutions of 23090 (PPI) with a high fidelity of up to 99%. Meanwhile, the proposed strategy is compatible with the preparation of QD pixels based on perovskite CsPbBr₃ and conventional CdSe QDs, exhibiting a wide applicability for QD pixel fabrication. Notably, we further demonstrate the great value of our approach to achieve efficiently electroluminescent QD pixels with a peak external quantum efficiency of 16.5%. Consequently, this work provides a general approach for realizing ultrahigh-resolution and high-fidelity patterns based on various QDs and a novel method for fabricating QD-patterned devices with high performance.

高像素分辨率正在成为下一代显示器的关键参数之一。尽管各种量子点（QD）图案化技术得到了发展，但实现超高分辨率（>10,000每英寸像素（PPI））和高保真QD图案仍然是一个亟待解决的严峻挑战。在这里，我们提出了一种新颖有效的正交电场诱导模板辅助介电电泳沉积方法，成功实现了最高像素分辨率 23090 (PPI) 之一，保真度高达 99%。同时，所提出的策略与基于钙钛矿CsPbBr ₃和传统CdSe QD的QD像素的制备兼容，在QD像素制造中表现出广泛的适用性。值得注意的是，我们进一步证明了我们的方法在实现峰值外部量子效率为 16.5% 的高效电致发光 QD 像素方面的巨大价值。因此，这项工作提供了一种基于各种量子点实现超高分辨率和高保真图案的通用方法，以及一种制造高性能量子点图案器件的新方法。